How Cryptocurrency and Digital Assets Are Valued in High Net Worth Divorce Cases

A decade ago, crypto holdings in a divorce were a curiosity. Now they are routine, and the sums involved can be staggering. In Culligan v Culligan [2025], the English family court confronted a Bitcoin fortune worth £20 million, originally purchased for £10,000, alongside undeclared crypto holdings of £371,000 that surfaced mid-proceedings. 

The judge treated the non-disclosure as litigation misconduct. 

The case is a sharp illustration of where digital assets sit in 2026: firmly within the court’s reach, and subject to the same disclosure obligations as any bank account, property portfolio, or trust.

Are Crypto Assets Treated as Property in English Divorce Law?

Yes, and the legal position has never been clearer. The Property (Digital Assets etc) Act 2025, which received Royal Assent in December 2025, formally recognises digital assets as a third category of personal property under English law, distinct from both physical objects ("things in possession") and enforceable rights ("things in action"). Before the Act, English courts had already been treating crypto as property on a case-by-case basis; AA v Persons Unknown [2019] confirmed Bitcoin’s status as property, and subsequent decisions extended the same reasoning to NFTs and other tokens. The 2025 Act removes any residual ambiguity. For divorce purposes, this means cryptocurrency, stablecoins, NFTs, and other digital holdings must be disclosed on Form E and are subject to division just like shares, real estate, or cash savings.

How Do Courts Value Volatile Crypto Holdings?

Volatility is the defining challenge, as a portfolio that’s worth £5 million on Monday might end up being worth £3.8 million by Friday. Courts therefore typically select a single valuation date, whether that is the date of the petition, the date of a financial dispute resolution hearing, or a date agreed between the parties, and fix the value at that point. In practice, judges often look at rolling averages over a period of weeks or months to smooth out extreme fluctuations.

The more difficult question is how to divide a volatile asset fairly. Where one party retains the crypto and the other receives assets of equivalent value in cash or property, the party holding the crypto bears the entire risk of future price movement. Courts are alert to this asymmetry. In high-value cases, judges increasingly aim to expose both parties to similar levels of volatility risk, either by splitting crypto holdings directly or by structuring offsetting arrangements that account for the speculative nature of the asset class.

What Happens When a Spouse Tries to Hide Crypto?

The pseudo-anonymity of blockchain technology gives some spouses the impression that digital assets can be concealed. It is a miscalculation. Every transaction on a public blockchain like Bitcoin or Ethereum is recorded permanently and can be traced by forensic specialists using chain analysis tools. Wallet addresses, exchange account histories, and on-chain transfer patterns all leave trails. Where a court suspects non-disclosure, it can order forensic examination of a party’s digital footprint, compel exchange platforms to produce records, and draw adverse inferences from incomplete or implausible explanations.

The consequences of concealment are severe. A party found to have hidden crypto assets risks being held in contempt of court, and the judge may redistribute the known assets to compensate the innocent party. In Culligan, the undeclared holdings emerged mid-trial, undermining the concealing party’s credibility across the entire proceedings.

Do You Need Specialist Forensic Support for Crypto in Divorce?

In straightforward cases involving a single exchange account with a transparent transaction history, standard disclosure may suffice. But high net worth divorces rarely involve straightforward crypto holdings. 

Assets may be spread across multiple exchanges, held in cold storage wallets, staked in DeFi protocols, or wrapped in tokenised investment vehicles. Some holdings will be denominated in obscure altcoins with thin liquidity. Others may involve yield farming or liquidity provision, where the economic exposure is not immediately obvious from the token balance alone.

Forensic accountants with specific expertise in blockchain analysis are increasingly essential. They can trace transfers between wallets, identify undisclosed holdings linked to known addresses, assess the liquidity of exotic tokens, and produce valuations that withstand cross-examination. Firms such as Vardags with in-house financial forensics capabilities are particularly well placed to handle these cases, because the forensic work and the legal strategy can be coordinated from the outset rather than managed across separate instructed experts.

What About Tax When Crypto Is Divided on Divorce?

Capital gains tax is a material consideration. Transfers between spouses during a tax year in which they are living together are generally treated as no gain/no loss disposals. But once a couple separates, transfers of crypto between them may trigger a CGT event. If one party sells crypto to fund a lump sum payment, the gain crystallises at that point. In a large portfolio with significant unrealised gains, the tax liability can run into hundreds of thousands of pounds, and ignoring it during negotiations produces settlements that look fair on paper but are not fair in practice.

Competent advisors will model the after-tax value of crypto holdings when negotiating financial remedies, rather than treating the gross market value as the relevant figure.

FAQs

Do I have to declare my cryptocurrency on Form E? 

Yes. Crypto assets are personal property under English law and must be disclosed in full, including holdings across all exchanges, wallets, and DeFi protocols. Failure to disclose constitutes a breach of the duty of full and frank disclosure.

Can the court force my spouse to hand over their crypto wallet keys?

The court has broad enforcement powers and can order a party to transfer crypto assets. Non-compliance can result in contempt proceedings. In practice, courts often achieve division through compensating adjustments in other asset classes rather than requiring direct wallet transfers.

What valuation date is used for crypto in divorce?

As of 2026, there is no fixed rule. The court may use the date of the petition, the date of a financial hearing, or another date the parties agree upon. Given crypto’s volatility, parties sometimes agree to use a rolling average over a defined period.

Is crypto acquired before marriage treated differently?

Crypto purchased before the marriage may be classified as non-matrimonial property, which can reduce the other party’s claim. However, if those assets were used for joint purposes during the marriage, such as funding the family home, the distinction may fall away.